Mechanism for detaching biscuits from their pans.



No. 874,195, PATENTED DEG. 17, 1907.

' G. HERBERT, JR.

MEGHANISM FOR DETAGHING BISGUITS FROM'THEIR FANS.

APPLICATION FILED 6. 1907.

2 SHEETS-SHEET 1.

PATENTED DEG. 17; 1907.

' G. HERBERT, JR. MEGHANISM POR DBTAGHING BISGUITS PROM THEIR FANS.

AEPLIOATION FILED MAY 6. 1907.

2 SHEETS-SHEET z.

i Mw

j No. 874,195.

GEORGE HERBERT, JR., OF GLASGOW, SCOTLAND.

MECHANISM FOR DETACHING BISCUITS FROM THEIR FANS.

Speccation f Letters Patent.

Patented Dec. 17, 1907.

Application filed May 6. 1907. Serial Nn. 372.024.

To aZZ 'whom it may concern:

Be it known that I, GEORGE HERBERT, Jr., a subject of the King of GreatBritain, residing at 719 Shields road, Pollokshields, Glasgow, Scotland,have invented Mechanism for Detaching Biscuits from their Pans, of whichthe following is a specification.

At present in the manufacture of sponge and other dropped biscuits, itis difficult to detach them after being baked from their pans as theyadhere strongly to the surface of the same, so much so that they cannotreadily be shaken 0H.

The object of my invention is to provide mechanism whereby biscuits canbe detached from the pans both easily and expeditiously.

The mechanism essentially consists of a wire or a metal strip or blade(or wires, or metal strips, or blades) held by arms in such manner thatit will. contact with and adjust itself to the surface of the pan. Thewire or blade is caused to pass under the biscuits and detach them fromthe pan and this may be done either by causing the wire or blade totravel along the surface of the pan or by moving the pan below a fixedwire or blade.

In order that the said invention may be clearly understood I havehereunto appended explanatory drawings which show, by way ofillustration or example, one method of carrying out my invention bymeans of a moving pan and a fixed wire or blade.

On the said drawings Figure 1 is a plan view of the mechanism. Fig. 2 isa side view of the same. Fig. 3 is a side view of one of the arms Z.Fig. 4 is a view of a slightly modified form of the same. Fig. 5 isaperspective view showing one end of the blade t and block il. Fig. 6 isr a sectional view showing the method of attaching the blade to the armsZr. Fig. 7 shows, in perspective, a modified arrangement.

In carrying out my invention l preferably carry the mechanism betweentwo side cheeks or frames a, a1, connected by means of cross bars Z)which support a table c having longitudinal grooves or recesses c1therein. Working within the grooves c1 is a pair of endless travelingchains d driven by means of sprockets, suitably mounted in the machineand the chains are each fitted with a number of upstanding studs orprojections e so arranged that when the pan f carrying the biscuitslsplaced on'the table c at the right 5 5 hand end Figs. 1 and 2 thereof,the projections e come into engagement with the edge of the pan and moveit, with the biscuits thereon, from end to end of the table and in thedirection of the arrow.

Fitted in brackets g, g1, which are carried on and extend upwards fromside cheeks or frames is a cross shaft ZL carrying, on the ends of itsprojecting arms Zr, the blade i, by means of which the biscuits aredetached from the pan f. This blade i which is preferably a flat stripof flexible steel as shown at Figs. 5 and 6, has a small block'or pieceil riveted to each end thereof and the blade is secured to the ends ofthe arms 7c by means of the screws i2 which pass through the ends of thearms and enter the blocks t1. The arms lc are forced apart, so as totighten the blade i byl means of a spiral spring j which is held incompression between the boss of one of the arms Zr and a collar jlsecured on the shaft Zt a second collar jz preventing any inwardmovement of the other arm Zc.

The flexible blade is caused to adjust itself to the 'surface of the panby means of a number of arms Z carried on the shaft 7i and provided attheir outer ends with adjustable screws or stops Z1 which bear on thepan and against the back edge of the blade and prevent the latter beingforced backby the biscuits while the ends Z2 of the I.arms bear upon theupper side of the blade (see Fig. 3) and' cause it to adapt itself tothe inequalities of the pan. The adjustable screws or sto s Z1 passthrough holes bored in the ends o the arms and are screwed at theirupper ends and passed through nuts Z3 secured on the end of fiat springsZ4 pinned to the arms, with the result that the screws Z1 are presseddownwards bythe springs Z4 and may be adjusted by means of the nuts. ThearmsZ aswell as the arms Zr are all pressed downwards individually bymeans of springs so as to hold the blade against the pan. The bosses orcollars of each of the arms is made 'with an upwardly extendingprojection m having a slot therein through which passes a pin m1projecting from Y a longitudinally slotted cross bar n carried betweenthe brackets g, g1. Each pin m1 is fitted in the slot of the bar n andis provided with a spiral spring o1 and an adjusting thumb screw o, thespring being in compression between the projection m on the boss of thearm and a collar or shoulder on the pin m1. By slackening the thumbscrews o, the pins m1, and also the arms Z, in conjunction therewith mabe moved laterally to suit the spacing o the sov biscuits on the pan.When the pan has passed below the blade 'i it is necessary to slightlyraise the latter so as to prevent it engaging with the studs orprojections e on the traveling chains d. To accomplish this, the bladeis lifted by means of a cam p keyed on a shaft p1 carried in brackets p2fitted to the side cheeks or frames and depending beneath the surface ofthe table, and driven through chain gear 293 by means of a sprocket p4.The cam p engages with a grooved Wheel g carried on the end of a shaftg1 which extends from side to side of the machine, passing through aslot (2 in each of the arms 7L, l.

The chains d and the cam p are so driven and arranged that at the propertime to lift the blade over the projections e the nose p5 on the camcomes in contact with the grooved wheel g which is thereby raised andraises with it, by means of its shaft g1, the arms 7c and l. The bladeis thereby raised and then allowed to fall again, on the studs orprojections e having passed beneath it.

The pans with the biscuits thereon are placed one after the other on thetable c and behind the detaching device. Each pan is moved forward inthe direction of the arrow, Fig. 1 by means of the traveling chains dwith the studs or projections e thereon. As each pan passes under thespring pressed. blade t the latter passes beneath the biscuits anddetaches them from the pan and leaves them lying on it. The biscuits arethen gently slid off and on to an endless band conveyer x. The chains d,chain p3, and the band conveyer can be driven by power in any suitableand well known manner.

Instead of pressing the arms 7c and Z downwards by means of springs, asshown in Figs. 1 and 2, a weight r may as shown at Fig. 4, be carried oneach arm Z and a similar weight on each arm c.

Fig. 7 shows a modification wherein, in lieu of the arms l and 7c andblade t' a flexible steel strip s is used, having projecting arms s1.The strip is secured through its arms by means of bolts or studs s2 to across bar t secured at its ends in brackets somewhat similar to thebrackets g, g1, and mounted on the side frames so that the said stripbears upon, and detaches the biscuits from the pan as it passes along inthe direction indicated by the arrow.

Having now fully described my invention what I claim and desire tosecure by Letters Patent is 1. In the manufacture of biscuits a devicefor mechanically detaching the baked biscuits from their pans means -formoving the pans, and means for raising said device out of the path ofthe pan-moving means.

2. In the manufacture of biscuits a device for mechanically andautomatically detaching the baked biscuits from their pans means formoving the pans, and means for raising the said device out of the pathof the panmoving means.

3. In the manufacture of biscuits, a device comprising, in combination,means for mechanically and automatically detaching the' baked biscuitsfrom their pans means for moving the pans and means for raising saiddevice out of the path of the pan-moving means.

4. In the manufacture of biscuits, the combination with a metal stripfor detaching the baked biscuits from their pans of means for holdingthe strip in position means for moving the pans and means for raisingsaid device out of the path of the pan-mo ving means.

5. In the manufacture of biscuits the combination with a metal strip fordetaching the baked biscuits from their pans, of arms between which themetal strip is stretched means for moving the ans and means for raisingsaid device out o' the path of the panmoving means.

6. In the manufacture of biscuits a device for detaching the bakedbiscuits from their pans, comprising, in combination, a metal strip,arms between which the metal strip is stretched, a support for the arms,springs acting on the arms, means for moving the pans and means forraising the said device out of the path of the pan-moving means.

7. In the manufacture of biscuits a device for detaching the bakedbiscuits from their pans, comprising, in combination, a metal strip,arms between which the metal strip is stretched, -a support for thearms, springs acting on and depressing the arms, means for moving thepans and means for raising said device out of the path of the pan-movingmeans. I

8. In the manufacture of biscuits a device for detaching the bakedbiscuits from their pans, comprising, in combination, ametal strip, armsbetween which the metal 'strip is stretched and held, springs acting oneach of the said arms, and mechanism for automatically moving the pansbelow the said metal strip and a cam for raising said strip out of thepath of the pan-moving means.

9. In the manufacture of biscuits a device for detaching the bakedbiscuits from their pans comprising, in combination, a metal strip, armsholding the metal strip, springs acting on the said arms so as todepress the same', means for moving a pan below the said metal strip andmeans for automatically raising the metal strip above the pan.

10'. In the manufacture of biscuits a device for detaching the bakedbiscuits from their pans, comprising, in combination, a metal strip,arms holding the metal strip, springs acting on the said arms so as todepress the same, means for moving a pan below the said metal Vstrip andmeans for automatically raising at intervals the metal strip above thepan.

11. In the manufacture of'biscuits a device for detaching the bakedbiscuits from their pans comprising, in combination, a metal strip, armsholding the metal strip, springs acting on the said arms so as todepress the same, means for moving a pan below the said metal strip andcam mechanism 'for automatically raising the metal strip above the pan.

12. In the manufacture of biscuits, a device for detaching the bakedbiscuits from their pans, comprising, in combination, a metal strip,arms holding the metal strip, springs acting on the said arms so as todepress the same, means for moving a pan below the said metal strip, awheel on one arm, a cam acting on the wheel to raise said blade abovethe pan-moving means and means for operating the cam.

13. In the manufacture of biscuits a device for detaching the bakedbiscuits from their pans comprising, in combination, a flexible metalstrip, arms holding the metal strip, springs acting on the said arms soas to depress the same, means for moving a pan below the said metalstrip and means for automatically raising the metal strip above the pan.

14. In the manufacture of biscuits a device for detaching the bakedbiscuits from their pans comprising, in combination, a flexible metalstrip, arms holding the metal strip, stops on the arms, springs actingon the said arms so as to depress the same, means for moving a pan belowthe said metal strip and means for automatically raising the metal stripabove the pani 15. In the manufacture of biscuits a device for detachingthe baked biscuits from their pans comprising, in combination, afieXible metal strip, arms holding the metal strip adjustable springstops onthe arms,

springs acting on the said arms so as to depress the same, means formoving a pan below the said metal strip and means for automaticallyraising `the metal strip above the 16.' In the manufacture of biscuits,the combination with a metal stri for detaching the baked biscuits fromthelr pans, of adjustable arms between which the metal strip isstretched, and means for moving the pans and means for raising saidmetal strip above the path of the pan-moving means.

17. In the manufacture of biscuits a device for detaching the bakedbiscuits from their pans, comprising, in combination, a metal strip,arms between which the metal strip is stretched, a shaft carrying thearms, means for adjusting the arms on the shaft, means for depressingthe arms and means for moving the pans below the arms.

18. In the manufacture of biscuits a device for detaching the bakedbiscuits from their pans, comprising, in combination, a metal strip,arms between which the metal strip is stretched, a shaft carrying thearms, brackets carrying the shaft, a slotted bar on the brackets, meansfor adjusting the arms in said slotted bar, means for holding the armsin the adjusted position, means for depressing the arms and means formoving the pans.

19. In the manufacture of biscuits a device for detaching the bakedbiscuits from their pans comprising, in combination, mechanical meansfor detaching the biscuits from their pans, means for moving the pansbelow said detaching means, a traveling band conveyer for carrying awaythe bis*4 cuits after they are detached from their pans, and means foroperating the traveling band conveyer.

20. In the manufacture of biscuits a device for detaching the bakedbiscuits from their pans, consisting-of a frame, brackets thereon, across shaft, arms on the shaft, a flexible strip held by the arms,guides on the frame for the reception of the pans, endless chains formoving the pans and-means for operating the chains.

21. In the manufacture of biscuits a device for detaching the bakedbiscuits from their pans, consisting of a frame, brackets thereon, across shaft, a slotted bar at the back of the shaft, arms movablymounted on the shaft, slotted projections on the arms, pins passedthrough the said slotted projections and the said slotted bar, springs,means for holding the pins in position, a iieXible strip held by thearms, guides on the frame for the reception of the pans, endless chainsfor moving the pans and means for operating the chains.v

In testimony whereof I aiiiX my signature in presence of two witnesses.

GEORGE HERBERT, JR.

Witnesses: ANDREW HAMiLToN, MARGARET FINDLAY YOUNG.

